CN101865288B - Cladding sealing ring and manufacturing method thereof - Google Patents
Cladding sealing ring and manufacturing method thereof Download PDFInfo
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- CN101865288B CN101865288B CN 201010170553 CN201010170553A CN101865288B CN 101865288 B CN101865288 B CN 101865288B CN 201010170553 CN201010170553 CN 201010170553 CN 201010170553 A CN201010170553 A CN 201010170553A CN 101865288 B CN101865288 B CN 101865288B
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- ring
- sealing
- inconel
- sealing ring
- seal
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- 238000007789 sealing Methods 0.000 title claims abstract description 40
- 238000005253 cladding Methods 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 239000002184 metal Substances 0.000 claims abstract description 25
- 229910052751 metal Inorganic materials 0.000 claims abstract description 25
- 229910052709 silver Inorganic materials 0.000 claims abstract description 4
- 239000004332 silver Substances 0.000 claims abstract description 4
- 229910001055 inconels 600 Inorganic materials 0.000 claims abstract 4
- 229910000816 inconels 718 Inorganic materials 0.000 claims abstract 2
- 229910000679 solder Inorganic materials 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 11
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 4
- 229920003023 plastic Polymers 0.000 abstract description 4
- 239000004033 plastic Substances 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
- 229910001026 inconel Inorganic materials 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000659 freezing mixture Substances 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- -1 first ring Chemical compound 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention discloses a cladding sealing ring and a manufacturing method thereof, wherein the cladding sealing ring consists of three parts of a first ring consisting of inconel 600, a second ring consisting of high purity silver, and a spiral spring which is formed by winding inconel 718 wrapped by the shell of the inconel 600, and an opening is arranged at the peripheral direction of the outside of the sealing ring which is formed by connecting the three parts into a whole body. The section of the ring is of a C shape, and is provided with an outer radial sealing surface and an inner radial sealing surface. When the sealing ring is compressed, each ring of the spiral spring generates an additional bound force to the radial inconel 600, and the high purity silver ring generates plastics deformation, and thereby the minor defect of the sealing surface of a flange is made up. The elastic and plastic combination makes the metal sealing ring have good sealing performance and the capability of compensating the flange deformation and sealing ring looseness caused by temperature and pressure fluctuation.
Description
Technical field
The present invention relates to the Sealing in a kind of pressurized container, the cladding sealing ring that especially uses in high temperature, high pressure vessel and the voltage stabilizer.
Background technique
Sealing under high temperature, high pressure working condition such as nuclear power station, must consider following technical order: 1, to guarantee run duration in the situation of temperature and pressure alternation leak-down rate all the time≤10-9Pam3/s, 3, in accident as in cooling off rapidly, leak-down rate≤10-6Pam3/s.Be the vitals that uses in the cogeneration power plant equipment in pressurized container and the voltage stabilizer, various types of static seals must be arranged to prevent the leakage of thermal cycle transformation working medium when these parts link to each other with the external world.Sealing has various cross-sectional structure with the various parts of special sealing, for example usually adopts: pure nickel solid torus pad, spirotallic gasket, grooved metal gasket, turbine pad etc.But these pads all are difficult to avoid the situation lower levelling plate at temperature and pressure alternation can produce stress relaxation and then cause leak-down rate not reach≤requirement of 10-9Pam3/s.
So the Sealing that a kind of better effects if need to be provided guarantees the sealing of junction between the pressure container flange.
Summary of the invention
The purpose of this invention is to provide realization plasticity and the good fit C type seal ring of elasticity that a kind of nuclear plant pressure vessels uses, it can utilize the interaction between two kinds of different metal materials and the spring three to realize plasticity and flexible good fit, thereby makes this cladding sealing ring have good sealability.
Another object of the present invention provides a kind of C type seal ring, and it is lax because of flange distortion and the seal ring that the temperature and pressure fluctuation causes that it can compensate nuclear plant pressure vessels.
This C type cladding sealing ring comprises: first ring, and described first ring is positioned at the outermost of seal ring, and its cross section is c-shaped, and with the first external sealed face and the first inner sealing surface; The second ring, the described second ring outside is closely coated by described first ring, and its cross section is c-shaped, and with two external sealed faces and the second inner sealing surface; Also comprise metal spring, described metal spring is located on the inboard of described the second ring and compresses described the second ring.
This ring cross section is c-shaped, with external sealed face and inner sealing surface radially.When pressing the sealing circle, each circle diameter of spiral spring produces additional rebounding force to the internal layer metal shell, and uses outer layer metal material generation plastic deformation, has tamped the tiny flaw on flange seal surface.The cooperation of this elasticity and plasticity makes this metal o-ring have good sealability and compensation causes flange distortion and the lax ability of seal ring because of the temperature and pressure fluctuation.
First ring in the seal ring among the present invention and the second ring are two parts independently separately, and material separately is different.
Described first ring and the second ring material adopt the different metal of hardness, are conducive to compensate and tamp the tiny flaw of sealing surfaces thereby the second external sealed face of the first inner sealing surface of first ring and the second ring is exerted pressure mutually.
Described first ring is that the purity size equals 99% silver medal, and described the second ring is inconel (inconel) 600, and the material that described metal spring adopts is inconel (inconel) 718.Cooperatively interacting and mutual effect of the resilient plastic of above-mentioned three kinds of materials makes this metallic packing ring have good sealability and compensation causes flange distortion and the lax ability of seal ring because of the temperature and pressure fluctuation
On the other hand, seal ring provided by the invention is because metal spring is Monolithic spring, and the centre only has a solder joint, and/or first ring only has a solder joint, and/or the second ring only has a solder joint.Because above-mentioned three parts are unitary construction, the centre only has a solder joint, and better is beneficial to radial seal and circumferentially compensates.
In addition, the radial leakage that described seal ring seal is different makes leak-down rate≤10-9Pam3/s.
The circumferential openings position of described first ring is fully corresponding with the circumferential openings position of the second ring, and is whole c-shaped.
More preferably: form metal spring with the method for single solder joint, and/or, form described first ring with the method for single solder joint, and/or, form described second with the method for single solder joint and encircle.
Description of drawings
According to following description and accompanying drawing, can understand well the present invention, these accompanying drawings have shown nonrestrictive embodiment of the present invention.
More particularly, in the accompanying drawings:
Be further detailed below in conjunction with example:
Fig. 1 is the axial section of pressurized container, contains the sealing of embodiments of the invention junction point between pressure container cylinder flange and top cover flange.
Fig. 2 is the sectional view of the annular sealing ring of the embodiment of the invention shown in Fig. 1.
1 first ring, 2 second rings, 3 metal springs,
4 flanges, 5 ozzles, 6 top covers, 7 pressurized container supporting surfaces, 8 ring segments, 9 guiding devices, 10 shells
Embodiment
Shown in Figure 1 is the pressurized container of high temperature, pressure coolant, cylindrical shell 10 is welded by the flange 4 of a strap bolt tapped hole, ring segment 8, a changeover portion and a semicircle lower seal head that is welded with freezing mixture import and export ozzle 5, wherein top cover 6 is pressed into semicircle by steel plate hot, be drilled with bolt hole at upper flange 4 upper peripheries, have on its supporting surface and place groove of the present invention.When high temperature, pressure coolant flow in pressurized container, wherein some inwall along pressurized container directly flows to the pressure vessel outlet adapter, and follow the variation of temperature and pressure, because pressure vessels top cover and shell flange are two independent parts of making, in pressurized container, must be assembled together and will guarantee high leak tightness, internal pressure will be far longer than the external pressure at pressurized container place during the pressurized container operation, for preventing refrigerant leaks, a seal ring is installed between pressure container cylinder and top cover.
Junction point will bear in the course of the work between pressure container cylinder and the top cover, the expansion that hot coolant produces and contraction and the radial and axial STRESS VARIATION that causes, the present invention adapts to the higher radial and axial STRESS VARIATION in this position with a kind of simply and effectively design, to obtain maximum sealing effect.
By sectional view shown in Fig. 2, the present invention is able to clearer and more definite description.This ring is comprised of three parts, comprises the first ring 1 and the second ring 2 that axially relatively are comprised of different materials, and in the inboard metal spring 3 is set simultaneously, and a circumferential openings along the ring outside is arranged in the seal ring that links into an integrated entity; Described first ring cross section is c-shaped, with sealing surface radially; Described the second ring cross section is c-shaped, with sealing surface radially; In described spiral spring is coated on by double layer of metal.First layer and second layer loop resistance have ended the circumferential stretching, extension of seal ring, thereby prevent bad peripheral stress.
As seen, the present invention more specifically arranges respectively the internal and external layer of unlike material and is provided with spring 3 in the inboard in the traditional C V-shaped ring.
Preferably, selecting two rings be the metal of unlike material, is purity more than or equal to 99% silver such as first ring, and the second ring is inconel (inconel) 600, and the material of metal spring employing is inconel (inconel) 718.
In preferred embodiment, first ring and the second annulate shaft be to separating, and is two parts independently separately, and two used metal materials of ring are different.First layer metal chain rate second layer metal ring hardness is little, is mainly used to play the good effect of making up, and is used for tamping the tiny flaw on flange seal surface.
The first ring and the second ring that are comprised of metallic material all only have a solder joint.Spiral spring in it is wrapped in by metal ring is a Monolithic spring, and the centre only has a solder joint, and better is beneficial to radial seal and circumferentially compensates.
Work medi-spring and first layer metal ring are used for the various leakage radially that the freezing mixture of sealed high-temp high-pressure produces betwixt, make leak-down rate under normal circumstances all the time≤10-9Pam3/s., the cooperation of this elasticity and plasticity makes this metal o-ring have good sealability and compensation causes flange distortion and the lax ability of seal ring because of the temperature and pressure fluctuation.
Should be appreciated that the example that accompanying drawing has only shown to be provided via practical demonstration of the present invention, can change its form and configuration, but can not break away from the scope of the design that the present invention is based on.Any reference mark that provides in subsidiary claims is that specification and accompanying drawing are read for ease of reference purely, and they do not limit the protection domain that is represented by claim.
Claims (4)
1. C shape cladding sealing ring that is used for nuclear plant pressure vessels, described C shape cladding sealing ring is placed between pressure container cylinder flange and the top cover flange, and described seal ring comprises first ring, and second encircles and metal spring,
Described first ring is positioned at the outermost of seal ring, and its cross section is c-shaped, and with the first external sealed face and the first inner sealing surface;
The described second ring outside is closely coated by described first ring, and its cross section is c-shaped, and with the second external sealed face and the second inner sealing surface;
Along week one circumferential openings is arranged respectively laterally after above-mentioned first ring and the second ring combination,
Described metal spring is located on the inboard of described the second ring and compresses described the second ring,
Described first ring and the second ring are two parts independently separately, and material separately is different, it is characterized in that:
Described first ring adopts the different metal of hardness with the second ring material, thereby make the first inner sealing surface of first ring and the second external sealed face of the second ring mutually exert pressure and be conducive to compensate and tamp the tiny flaw of sealing surfaces, described first ring is purity more than or equal to 99% silver, described the second ring is inconel 600, and the material that described metal spring adopts is inconel 718.
2. the seal ring described in according to claim 1 is characterized in that:
Described metal spring is Monolithic spring, and the centre only has a solder joint, and/or,
Described first ring only has a solder joint, and/or,
Described the second ring only has a solder joint.
3. C shape cladding sealing ring according to claim 1 is characterized in that: described first ring and the second ring all only have a solder joint.
4. C shape cladding sealing ring according to claim 1, it is characterized in that: the radial leakage that described seal ring seal is different makes leak-down rate≤10
-9Pam
3/ s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010170553 CN101865288B (en) | 2010-05-13 | 2010-05-13 | Cladding sealing ring and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010170553 CN101865288B (en) | 2010-05-13 | 2010-05-13 | Cladding sealing ring and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101865288A CN101865288A (en) | 2010-10-20 |
| CN101865288B true CN101865288B (en) | 2013-01-30 |
Family
ID=42957125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010170553 Active CN101865288B (en) | 2010-05-13 | 2010-05-13 | Cladding sealing ring and manufacturing method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN101865288B (en) |
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| CN102168757A (en) * | 2011-02-01 | 2011-08-31 | 宁波天生密封件有限公司 | C-shaped cladding sealing ring of built-in spring and manufacturing method thereof |
| CN102080725A (en) * | 2011-02-01 | 2011-06-01 | 宁波天生密封件有限公司 | Intelligent wrapped C-shaped sealing ring |
| CN102359609A (en) * | 2011-10-22 | 2012-02-22 | 无锡智能自控工程有限公司 | Metal valve seat sealing structure for cryogenic butterfly valve under ultralow temperature working condition |
| CN102619980B (en) * | 2012-03-09 | 2015-07-08 | 浙江华夏阀门有限公司 | Rectangular ring and O-shaped ring self-tight sealing structure |
| CN103377725B (en) * | 2012-04-27 | 2016-05-18 | 上海核工程研究设计院 | A kind of reactor core internals |
| CN103646674A (en) * | 2013-11-27 | 2014-03-19 | 中科华核电技术研究院有限公司 | C-shaped sealing ring |
| CN103594125A (en) * | 2013-11-27 | 2014-02-19 | 中科华核电技术研究院有限公司 | Sealing ring used for reactor pressure vessel |
| CN103745756A (en) * | 2013-12-23 | 2014-04-23 | 宁波天生密封件有限公司 | Production process of O-shaped seal ring of nuclear reactor pressure vessel and products thereof |
| CN104616706B (en) * | 2015-02-05 | 2017-12-15 | 喻杰 | A kind of pressure-resistant shell component of integration |
| CN105987940A (en) * | 2015-02-13 | 2016-10-05 | 亚申科技研发中心（上海）有限公司 | High-pressure electrochemical reaction tank and under pressure system |
| DE102016213899A1 (en) * | 2016-07-28 | 2018-02-01 | Mahle International Gmbh | sealing element |
| CN106247050B (en) * | 2016-09-05 | 2018-11-09 | 宁波天生密封件有限公司 | A kind of normal residual heat removal exchanger sealing ring |
| CN107191155B (en) * | 2017-04-14 | 2023-07-25 | 博德世达（天津）能源科技有限公司 | High-temperature underground safety valve |
| CN107945890B (en) * | 2017-12-15 | 2020-09-25 | 中广核工程有限公司 | Nuclear power station reactor control rod driving mechanism |
| CN111649133A (en) * | 2020-06-03 | 2020-09-11 | 滨州双峰石墨密封材料有限公司 | Winding gasket |
| CN112253750A (en) * | 2020-10-21 | 2021-01-22 | 中国航发沈阳发动机研究所 | Flexible graphite braided sealing strip and mounting method thereof |
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| DE102008035186A1 (en) * | 2008-07-28 | 2010-02-04 | Elringklinger Ag | Form sealing ring e.g. C-shaped sealing ring, manufacturing method for sealing arrangement of exhaust gas guiding pipelines in internal combustion engine, involves bending strip or rod-like profile body to develop ring form or spiral form |
| CN201843994U (en) * | 2010-05-13 | 2011-05-25 | 励行根 | Coating seal ring |
-
2010
- 2010-05-13 CN CN 201010170553 patent/CN101865288B/en active Active
Patent Citations (5)
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|---|---|---|---|---|
| JP2001182833A (en) * | 1999-12-24 | 2001-07-06 | Nippon Valqua Ind Ltd | Metal gasket and its manufacturing method |
| JP2003343726A (en) * | 2002-05-24 | 2003-12-03 | Sanko Kogyo Kk | Gasket |
| CN201133465Y (en) * | 2008-01-07 | 2008-10-15 | 贵州航天精工制造有限公司 | C -type sealed ring |
| DE102008035186A1 (en) * | 2008-07-28 | 2010-02-04 | Elringklinger Ag | Form sealing ring e.g. C-shaped sealing ring, manufacturing method for sealing arrangement of exhaust gas guiding pipelines in internal combustion engine, involves bending strip or rod-like profile body to develop ring form or spiral form |
| CN201843994U (en) * | 2010-05-13 | 2011-05-25 | 励行根 | Coating seal ring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101865288A (en) | 2010-10-20 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: SONG WEI Effective date: 20130417 Owner name: TIANSHENG AIRTAIGHT PACKING NINGBO Free format text: FORMER OWNER: LI XINGGEN Effective date: 20130417 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130417 Address after: Zhejiang Province, Cixi City, Baisha 315302 Peng min Lu No. 118 Patentee after: Ningbo Tiansheng Sealing Packing Co., Ltd. Address before: 315302 Zhejiang Province, Cixi city Hushanjiedao Qun Feng Cun Li Jia Nong Patentee before: Li Xinggen Patentee before: Song Wei |
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| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20101020 Assignee: Tianding LIAN sealing technology (Beijing) Co. Ltd. Assignor: Ningbo Tiansheng Sealing Packing Co., Ltd. Contract record no.: 2016110000014 Denomination of invention: Cladding sealing ring and manufacturing method thereof Granted publication date: 20130130 License type: Common License Record date: 20160919 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model |